There are maps made for all courses and are posted for the chiefs. These are for safety, jr kart requirements etc, Reed posted his publicly.

I would expect changes to be made as needed to accommodate weather and pavement breakup as well as site issues. Given peoples expections, some course designers choose not to post them publically. Also part of the sport itself is reading the course as maps typically arent accurate enough.

Just knowing which direction the course goes on a particular day would be
helpful for those of us with unevenly worn tires before the event.
Under dry conditions, I usually install my autocross wheels and "street" tires on the car a day or two in advance of an event so I can check things over.
Thanks.